title: miR-196a ameliorates phenotypes of Huntington disease in cell, transgenic mouse, and induced pluripotent stem cell models.
abstract: Huntington disease (HD) is a dominantly inherited neurodegenerative disorder characterized by dysregulation of various genes. Recently, microRNAs (miRNAs) have been reported to be involved in this dysregulation, suggesting that manipulation of appropriate miRNA regulation may have a therapeutic benefit. Here, we report the beneficial effects of miR-196a (miR196a) on HD in cell, transgenic mouse models, and human induced pluripotent stem cells derived from one individual with HD (HD-iPSCs). In the in vitro results, a reduction of mutant HTT and pathological aggregates, accompanying the overexpression of miR-196a, was observed in HD models of human embryonic kidney cells and mouse neuroblastoma cells. In the in vivo model, HD transgenic mice overexpressing miR-196a revealed the suppression of mutant HTT in the brain and also showed improvements in neuropathological progression, such as decreases of nuclear, intranuclear, and neuropil aggregates and late-stage behavioral phenotypes. Most importantly, miR-196a also decreased HTT expression and pathological aggregates when HD-iPSCs were differentiated into the neuronal stage. Mechanisms of miR-196a in HD might be through the alteration of ubiquitin-proteasome systems, gliosis, cAMP response element-binding protein pathway, and several neuronal regulatory pathways in vivo. Taken together, these results show that manipulating miR-196a provides beneficial effects in HD, suggesting the potential therapeutical role of miR-196a in HD.
authors.affiliation: Department of Physiology, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
authors.forename: Pei-Hsun
authors.initials: PH
authors.lastname: Cheng
authors.forename: Chia-Ling
authors.initials: CL
authors.lastname: Li
authors.forename: Yu-Fan
authors.initials: YF
authors.lastname: Chang
authors.forename: Shaw-Jeng
authors.initials: SJ
authors.lastname: Tsai
authors.forename: Yen-Yu
authors.initials: YY
authors.lastname: Lai
authors.forename: Anthony W S
authors.initials: AW
authors.lastname: Chan
authors.forename: Chuan-Mu
authors.initials: CM
authors.lastname: Chen
authors.forename: Shang-Hsun
authors.initials: SH
authors.lastname: Yang
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism / Q000473:pathology; D002454:Cell Differentiation; D045744:Cell Line, Tumor; D004195:Disease Models, Animal; D004622:Embryo, Mammalian; D005786:Gene Expression Regulation; D006801:Humans; D006816:Huntington Disease / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D007668:Kidney / Q000378:metabolism / Q000473:pathology; D051379:Mice; D008822:Mice, Transgenic; D035683:MicroRNAs / Q000235:genetics* / Q000378:metabolism; D009474:Neurons / Q000166:cytology / Q000378:metabolism*; D010641:Phenotype; D039904:Pluripotent Stem Cells / Q000166:cytology / Q000378:metabolism*; D050486:Serotonin Plasma Membrane Transport Proteins / Q000235:genetics* / Q000378:metabolism; D014162:Transfection
chemical_list: C542543:MIRN196 microRNA, human; D035683:MicroRNAs; D050486:Serotonin Plasma Membrane Transport Proteins; C493231:Slc6a4 protein, mouse